Which of the Following Best Describes Melting of the Mantle

question 91

Multiple Choice

Which of the following best describes melting of the mantle at subduction zones that leads to island arc volcanos?

• A)Heat is carried downward with the subducting plate and melts the mantle above the downgoing plate.
• B)Water released from the subducting plate decreases the melting temperature in the mantle above the downgoing plate to generate magmas from the overlying mantle wedge.
• C)The subducting plate is heated as it is carried to depth and the subducted oceanic crust melts.
• D)The subducted plate subsides into the mantle and allows magma from the lower mantle magma ocean to rise toward the surface.

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Definitions:

Double Helix

The structure of DNA, characterized by two intertwined strands forming a spiral shape, discovered by Watson and Crick.

Genotype

The genetic makeup of an organism, comprising all the alleles and genes within an individual's DNA.

Genetic Material

Genetic material constitutes the DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in living organisms that contains the biological instructions which determine an organism's physical characteristics, development, and functioning.

Double Helix

The structure of DNA, characterized by two twisted strands forming a shape similar to a spiral staircase.